Meta Box: known security problems
10 known security problems reported for this WordPress plugin, with the affected versions, the fix and what to do.
Updated
In short
There are 10 known security problems on this page. Each one has a fixed version. Updating to version 5.15.3 or newer covers every fixed problem listed here.
Based on public reports. Check the plugin’s changelog. Watchfox AI may be wrong.
Get an email when your site is affected: install Watchfox AI (free)
Anyone with an account on your site, even a basic one could plant harmful code that runs for your visitors or admins
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.15.2
- Fixed in
- 5.15.3
- What to do
- If your site has an affected version, update Meta Box to version 5.15.3 or newer.
- Official ID
- CVE-2026-109216
- Report title
- Meta Box <= 5.15.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Background Field Array Keys
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (up to and including 5.15.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.15.2
- Fixed in
- 5.15.3
- What to do
- If your site has an affected version, update Meta Box to version 5.15.3 or newer.
- Official ID
- CVE-2026-109700
- Report title
- Meta Box – A Framework for Dynamic Websites <= 5.15.2 - Missing Authorization
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site could use it to harm your site (before 5.13.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 5.13.1
- Fixed in
- 5.13.1
- What to do
- If your site has an affected version, update Meta Box to version 5.13.1 or newer.
- Official ID
- CVE-2026-15248
- Report title
- Meta Box < 5.13.1 - Authenticated (Contributor+) Insecure Direct Object Reference
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site could read or delete private files on your server (up to and including 5.11.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.11.1
- Fixed in
- 5.11.2
- What to do
- If your site has an affected version, update Meta Box to version 5.11.2 or newer.
- Official ID
- CVE-2026-39468
- Report title
- Meta Box <= 5.11.1 - Authenticated (Contributor+) Arbitrary File Deletion
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site could read or delete private files on your server (up to and including 5.11.1) (2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.11.1
- Fixed in
- 5.11.2
- What to do
- If your site has an affected version, update Meta Box to version 5.11.2 or newer.
- Official ID
- CVE-2025-14675
- Report title
- Meta Box <= 5.11.1 - Authenticated (Contributor+) Arbitrary File Deletion
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (up to and including 5.9.10)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.9.10
- Fixed in
- 5.9.11
- What to do
- If your site has an affected version, update Meta Box to version 5.9.11 or newer.
- Official ID
- CVE-2024-43235
- Report title
- Meta Box – WordPress Custom Fields Framework <= 5.9.10 - Missing Authorization to Information Exposure
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site could use it to harm your site (up to and including 5.9.3)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.9.3
- Fixed in
- 5.9.4
- What to do
- If your site has an affected version, update Meta Box to version 5.9.4 or newer.
- Official ID
- CVE-2024-1204
- Report title
- Meta Box – WordPress Custom Fields Framework <= 5.9.3 - Authenticated (Contributor+) Information Exposure via Post Meta
- First reported
- Sources
- Wordfence, seen
Someone with a contributor account on your site could plant harmful code that runs for your visitors or admins
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.9.2
- Fixed in
- 5.9.3
- What to do
- If your site has an affected version, update Meta Box to version 5.9.3 or newer.
- Official ID
- CVE-2023-6526
- Report title
- Meta Box – WordPress Custom Fields Framework <= 5.9.2 - Authenticated (Contributor+) Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could use it to harm your site (before 4.16.3)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 4.16.3
- Fixed in
- 4.16.3
- What to do
- If your site has an affected version, update Meta Box to version 4.16.3 or newer.
- Official ID
- CVE-2019-14793
- Report title
- Meta Box - WordPress Custom Fields Framework <= 4.16.2 - File Deletion via attachment_id Parameter
- First reported
- Sources
- Wordfence, seen
Someone could use it to harm your site (up to and including 4.16.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 4.16.1
- Fixed in
- 4.16.2
- What to do
- If your site has an affected version, update Meta Box to version 4.16.2 or newer.
- Official ID
- CVE-2019-14794
- Report title
- Meta Box <= 4.16.1 - Mishandling of File Upload
- First reported
- Sources
- Wordfence, seen
Where this comes from
We collect these reports from public security sources and rewrite them in plain words. Each problem shows its sources and the date we first saw it. This page never says whether your own site is affected: only a check of your site’s versions can tell.
Get an email when your site is affected.
Install Watchfox AI once. It checks your plugins and themes against this list every day, for free.
Install Watchfox AI (free)